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In subduction zones, dense pieces of oceanic crust are pulled downward toward the mantle. What is the result of this?

2 Answers

6 votes
Answer: Well in the ocean, this specifically creates ocean trenches (i.e Mariana Trench).
User Shanmugaraja G
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New crust is formed on the opposite end of the plate as it pulled away from. 
User Wagner Patriota
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